Slide-fastening for grippers and gripper extension-rods.



No. 654,259. Patented lJuly 2.4, |900. T. a. JENKINS & J. wlLLs.

SLIDE FSTENING FR GHIPPERS AND GRIPPER EXTENSION RODS.

(Application filed Sept. 5, 1899.)

(No Model.)

me Nonms PETER: no. moraumo., wnsnmuom u. c.

THOMAS GVALIA JENKINS AND JOHN BALLARD VILLS, OF WHEELING,

WEST VIRGINIA.

SLlDE-FASTENING FOR GRIPPERS AND GRIPPER EXTENSION-RODS.

SPECIFICATION forming part of Letters Patent No. 654,259, dated J' uly 24, 1900. Application tiled September 5, 1899. Serial No. 729,555. (No model.)

Like letters of reference design ate like parts To @ZZ whom, it may concern.-

Be it known that we, THOMAS GWALIA JENKINS and JOHN BALLARD WILLs, citizens of the United States of America, and residents of Wheeling, county of Ohio, and State of Vest Virginia, have invented certain new and useful Improvements in Slide-Fastenings for Grippers and Gripper Extension-Rods, of which the following is a specilication.

Our invention relates to improvements in slide-fastenings for gripper and gripper eX- tension-rods, and more particularly to improvements in the slide-fastenings for the extension-rods of grippers for platen printing-presses, and still more particularly to improvements in the extension-rod slide adjustment of grippers for platen printing-presses shown in an application for patent liled'in the Patent Office of the United States by us on May 18, 1899, Serial No. 717,375, upon which allowance of patent was made August 7,1899,but for which patent has not yet issued.

The object 0f our invention is to provide a simple and effective means by which the extension-rods may be easily and quickly adjusted to any position along the side grippers; and it consists in the construction of a bead or dovetail or other shaped molding along the entire length of the side grippers on their inner edges, which bead or dovetail serves as a track along which slides on the ends of the extension-rods may be moved, the adjustment of said rods being secured by means of a screw-thread provided on each end thereof, which passes through the block or slide and is adapted to impinge on the bead or dovetail of the side gripper.

Referring to the drawings, Figure 1 represents a perspective View of our invention, the upper parts of the side grippers being broken away. Fig. 2 represents an enlarged transverse sectional View of the parts comprising our invention, taken on the line 2 2, Fig. 1, showing the bead on the side gripper. Fig. 3 represents a similar Yview' taken on the line 3 3 of Fig. 4t and showing a dovetail construction on the side gripper. Fig. 4 represents a perspective view of our invention, showing the dovetail construction on the inner side or edge of the side gripper and the slide-fastening used in connection therewith.

throughout the several views.

In the drawings, A and A represent the side grippers or frisket-fingers of a platen printing-press, their upper portions being broken away in the illustration, and near the bases thereof are the holes B, by which they are secured to the common slide of the press.

O and D represent the two parts of an eX- tension-rod, the part O being a hollow tube, in the end of which the rod D slides as the side grippers A and A are being drawn toward or away from each other in adjusting the same to suit the size of a sheet of paper.

E represents a longitudinal slot in one of the side grippers, designed to prevent the mashing of gage-pins. The side gripper having been previously adjusted with reference to said gage-pins, said gage-pins will be straddled by the sides of said slot when the platen cornes in contact with the side gripper'.

Our present invention consists in constructing the side grippers A with a bead F or dovetail G on their inner edges, along which a block or slide H, provided along its edge with a longitudinal groove to t said bead or dovetail, may be moved. l/Ve also provide said block or slide H with a threaded hole passing through it from its opposite edge and at right angles to said groove. We construct the extension-rods with threaded ends Lwhich pass through the threaded holes in the blocks or slides H, so that when it is desired to adjust the same in any position along the side grippers the extension-rods may be screwed into the blocks or slides until their ends impinge on the bead or dovetail. The block or slide H is so constructed that its face is flush with the face of the side gripper A, and the threaded hole which passes through the block or slide H passes near the edge of the face of the same, so that when the extension-rod C is secured therein the face of the extensionrod will lie iiush'with the face of the block 0r slide. By this construction it is apparent that a perfectly smooth and even surface is provided the parts which naturally come into contact with the platen, thus permitting all the parts to assist in stripping a sheet of paper from the platen.

From the foregoing description of our invention it will be readily seen that when it is desired to adjust the extension-rods to any position on the side grippers the blocks or slides I-I, having the ends of the extensionrods secured therein, may be moved along the bead F or dovetail G to the desired position and the threaded ends I screwed into the blocks or slides H until their ends impinge on said beads or dovetails, as the case may be, when they will be held securely in position.

It is apparent that by our invention we provide an `extremely-simple, inexpensive, and effective slide and fastening which may be quickly and easily adjusted to any position and which obviates the necessity of nsing a screw or lever-screw, as shown in our former invention already referred to.

It is obvious that the molding 'on the edge of the side gripper-s may be constructed in various other shapes, those shown being considered the simplest. It is also obvious that many mere mechanical changes may be made in the details of construction Without departing from the spirit or scope of our invention, and therefore we do not desire to limit ourselves to the precise construction shown.

Having thus described our invention, what e we claim as new, and desire to secure by Letters Patent, is l 1. `A slide-fastening for gripper and grip- Vper extension-rods consisting of a bead eX- tending along the entire length of the inner edge of each side gripper, a block or slide having a longitudinal groove in the edge thereof adapted to fit over said bead and slide thereon, a threaded hole extending through said block or slide at a right angle to said groove, and the extension-rods having their ends threaded and adapted to screw through the threaded holes of the blocks or slides and to impinge on the bead of the side grippers,

substantially as and for the purposes set forth and described.

2. In a device of the character described,

`the side grippers, each having a bead or dovetail extending along the entire length thereof and on the inner side thereof, a block or slide adapted to fit over and slide along said bead or dovetail, and the extension-rods provided With threaded ends which pass through said blocks or slides and impinge on said beads or dovetails, substantially as and for the purposes set forth and described.

3. In a device of the character described, the combination with the side gripper-s and the slides or blocks, the former each having a bead or dovetail molding along its inner edge and the latter each having a longitudinal groove in its edge adapted to fit over and slide along' said bead or dovetail, of the extension-rods provided with threaded ends which screw through the blocks or slides to engage and iinpinge upon the said bead or dovetail, substantially as and for the purposes set forth and described. Y

4. In combination, two side grippers each provided with a bead or dovetail molding, a blocker slide constructed with a longitudinal groove in its edge which fits over the said bead or dovetail and adapted to be moved thereon, and the extension-rods having their ends threaded and passing through said block or slide so as to im pinge upon the said mold ing when it is desired to secure the extension -rods in position, substantially as described.

Signed by us at Wheeling, West Virginia, this 10th day of August, 1899.

THOMAS GWALIA JENKINS, -JOHN BALLARD WILLS. Witnesses:

' ALBERT FLADING,

A. L. SAWTELL. 

